1 ; RUN: opt < %s -S -loop-unroll -unroll-runtime -unroll-count=2 | FileCheck %s -check-prefix=EPILOG 2 ; RUN: opt < %s -S -loop-unroll -unroll-runtime -unroll-count=2 -unroll-runtime-epilog=false | FileCheck %s -check-prefix=PROLOG 3 4 ; This tests that setting the unroll count works 5 6 7 ; EPILOG: for.body.preheader: 8 ; EPILOG: br i1 %1, label %for.end.loopexit.unr-lcssa, label %for.body.preheader.new, !dbg [[PH_LOC:![0-9]+]] 9 ; EPILOG: for.body: 10 ; EPILOG: br i1 %niter.ncmp.1, label %for.end.loopexit.unr-lcssa.loopexit, label %for.body, !dbg [[BODY_LOC:![0-9]+]] 11 ; EPILOG-NOT: br i1 %niter.ncmp.2, label %for.end.loopexit{{.*}}, label %for.body 12 ; EPILOG: for.body.epil.preheader: 13 ; EPILOG: br label %for.body.epil, !dbg [[EXIT_LOC:![0-9]+]] 14 ; EPILOG: for.body.epil: 15 ; EPILOG: br label %for.end.loopexit.epilog-lcssa, !dbg [[BODY_LOC:![0-9]+]] 16 17 ; EPILOG-DAG: [[PH_LOC]] = !DILocation(line: 101, column: 1, scope: !{{.*}}) 18 ; EPILOG-DAG: [[BODY_LOC]] = !DILocation(line: 102, column: 1, scope: !{{.*}}) 19 ; EPILOG-DAG: [[EXIT_LOC]] = !DILocation(line: 103, column: 1, scope: !{{.*}}) 20 21 ; PROLOG: for.body.preheader: 22 ; PROLOG: br {{.*}} label %for.body.prol.preheader, label %for.body.prol.loopexit, !dbg [[PH_LOC:![0-9]+]] 23 ; PROLOG: for.body.prol: 24 ; PROLOG: br label %for.body.prol.loopexit, !dbg [[BODY_LOC:![0-9]+]] 25 ; PROLOG: for.body.prol.loopexit: 26 ; PROLOG: br {{.*}} label %for.end.loopexit, label %for.body.preheader.new, !dbg [[PH_LOC]] 27 ; PROLOG: for.body: 28 ; PROLOG: br i1 %exitcond.1, label %for.end.loopexit.unr-lcssa, label %for.body, !dbg [[BODY_LOC]] 29 ; PROLOG-NOT: br i1 %exitcond.4, label %for.end.loopexit{{.*}}, label %for.body 30 31 ; PROLOG-DAG: [[PH_LOC]] = !DILocation(line: 101, column: 1, scope: !{{.*}}) 32 ; PROLOG-DAG: [[BODY_LOC]] = !DILocation(line: 102, column: 1, scope: !{{.*}}) 33 34 define i32 @test(i32* nocapture %a, i32 %n) nounwind uwtable readonly !dbg !6 { 35 entry: 36 %cmp1 = icmp eq i32 %n, 0, !dbg !7 37 br i1 %cmp1, label %for.end, label %for.body, !dbg !7 38 39 for.body: ; preds = %for.body, %entry 40 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ] 41 %sum.02 = phi i32 [ %add, %for.body ], [ 0, %entry ] 42 %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv, !dbg !8 43 %0 = load i32, i32* %arrayidx, align 4, !dbg !8 44 %add = add nsw i32 %0, %sum.02, !dbg !8 45 %indvars.iv.next = add i64 %indvars.iv, 1, !dbg !9 46 %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !9 47 %exitcond = icmp eq i32 %lftr.wideiv, %n, !dbg !9 48 br i1 %exitcond, label %for.end, label %for.body, !dbg !9 49 50 for.end: ; preds = %for.body, %entry 51 %sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ] 52 ret i32 %sum.0.lcssa, !dbg !10 53 } 54 55 !llvm.module.flags = !{!0, !1, !2} 56 !llvm.dbg.cu = !{!11} 57 !0 = !{i32 2, !"Dwarf Version", i32 4} 58 !1 = !{i32 2, !"Debug Info Version", i32 3} 59 !2 = !{i32 1, !"PIC Level", i32 2} 60 61 !3 = !{} 62 !4 = !DISubroutineType(types: !3) 63 !5 = !DIFile(filename: "test.cpp", directory: "/tmp") 64 !6 = distinct !DISubprogram(name: "test", scope: !5, file: !5, line: 99, type: !4, isLocal: false, isDefinition: true, scopeLine: 100, flags: DIFlagPrototyped, isOptimized: false, unit: !11, variables: !3) 65 !7 = !DILocation(line: 100, column: 1, scope: !6) 66 !8 = !DILocation(line: 101, column: 1, scope: !6) 67 !9 = !DILocation(line: 102, column: 1, scope: !6) 68 !10 = !DILocation(line: 103, column: 1, scope: !6) 69 !11 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang", 70 file: !5, 71 isOptimized: true, flags: "-O2", 72 splitDebugFilename: "abc.debug", emissionKind: 2) 73
